There's another thing about vents in the south that folks in Alaska don't have to worry about. The place I mentioned with two cellars was the place Dad bought at Healdton, OK. But before he bought that place, we rented a place at Healdton when we first moved out there. It only had one cellar, dirt covered, and had a single vertical vent pipe. Now of course cellars in those days had no lights so when you went down there, you sometimes carried a flashlight or a kerosene lantern. But occasionally, there was enough light if you just left the door open.
So one day, Mother went down there to get some kind of canned goods, and she came running back up the steps, screaming for me. She said there was a big snake down there. I was 10 years old and had just gotten my first .22 rifle. It so happened that my best friend was there that day, so I let him have my Dad's .22 and had him standing on top of the cellar to shoot the snake if it came up through the vent pipe, and I went down in the cellar with my .22 and a flashlight to look for the snake. Sure enough, the snake went out through that vent and my buddy got to shoot it.
Mother used to tell the story about her telling friends about that incident and one of her friends said, "Why would you let that little boy go down there with a snake?" and she said, "Because I was afraid of them and he wasn't."